Complex breeding method for improving growth trait of Pelteobagrus fulvidraco

A technology for growth traits and yellow catfish, applied in biochemical equipment and methods, microbe measurement/inspection, fish farming, etc., can solve problems such as high deformity rate, high production cost, and low fertilization rate

Active Publication Date: 2017-09-15
NANJING NORMAL UNIVERSITY
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AI Technical Summary

Problems solved by technology

The offspring of female yellow catfish and YY super male yellow catfish ("Quanxiong No. 1" yellow catfish) have reached the level of large-scale breeding, but the production cost is too high. The reported female yellow catfish and ye

Method used

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  • Complex breeding method for improving growth trait of Pelteobagrus fulvidraco
  • Complex breeding method for improving growth trait of Pelteobagrus fulvidraco
  • Complex breeding method for improving growth trait of Pelteobagrus fulvidraco

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Embodiment 1

[0059] 1. Population breeding of peltrelative catfish and peltedelachus vacheronii

[0060] Select yellow catfish and yellow catfish from different sources through artificial induction and artificial insemination, and cultivate them in stages until at least 2 years old. The breeding is divided into three stages of selection. The selection rate of the first stage is 60%, and the second stage is divided into male and female selection. 50% selection rate and 40% selection rate in the third stage. The overall selectivity rate was 1.2% (see figure 1 with figure 2 ).

[0061] The yellow catfish and the yellow catfish selected for the first generation were selected again according to the above-mentioned method, so as to obtain the second-generation selected yellow catfish and the yellow catfish population.

[0062] 2. Genetic testing of peltrelative catfish and peltedelachus vacheronii

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Abstract

The invention relates to a complex breeding method for improving a growth trait of Pelteobagrus fulvidraco. The complex breeding method includes the following steps: acquiring high-quality Pelteobagrus fulvidraco and Pelteobagrus vachelli parent library through second generation group breeding; using microsatellite markers to detect Pelteobagrus fulvidraco and Pelteobagrus vachelli parents, selecting parent individuals having the genetic similarity of above 90% as a reproduction group; using female Pelteobagrus fulvidraco as female parents and male Pelteobagrus vachelli as male parents to perform hybrid breeding; and acquiring hybrid Pelteobagrus fulvidraco having the growth speed above 20% faster than common Pelteobagrus fulvidraco, wherein the hybrid Pelteobagrus fulvidraco has both excellent traits of dual parents, an attracting color ( female parents) and fast growth speed ( male parents). The complex breeding method can acquire improved hybrid Pelteobagrus fulvidraco, and has important significance for increasing the unit yield, the breeding benefits, and serving production practice.

Description

technical field [0001] The invention relates to a compound breeding method for improving the growth traits of yellow catfish, which belongs to the field of genetic breeding of yellow catfish. Background technique [0002] Pelteobagrus fulvidraco belongs to Siluriformes, Bagridae, and Pelteobagrus. It is an important aquaculture species in my country. It is widely distributed in the Yangtze River system and is an important species in my country. Demersal small economic fish. Because the meat is delicious, the meat is tender, nutritious, and there are few intermuscular thorns, it can survive for a period of time after leaving water, and it can be marketed fresh. price. Therefore, it has become one of the leading varieties with great breeding prospects in my country. [0003] At present, with the expansion of the breeding scale of the yellow catfish, the fish has begun to show germplasm degradation, smaller growth individuals, and poor stress resistance. A new strain (specie...

Claims

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Application Information

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IPC IPC(8): A01K61/10C12Q1/68G06F19/20G06F19/22
CPCA01K61/10C12Q1/686G16B25/00G16B30/00C12Q2563/107Y02A40/81
Inventor 尹绍武张佳佳谢万里
Owner NANJING NORMAL UNIVERSITY
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